adidas Men's throwstar-M 100% Textile/Synthetic Imported Rubber sole Weight: 9.7 ounces (size 9); Recommended events: shot put (rotational and glide), discus, hammer, weight throw Synthetic upper designed to hold the foot securely during all phases of throwing events Soft collar around the ankle to reduce pressure on the ankle and Achilles Strap band provides great midfoot support Designed for the thrower looking for a multi-event training and performance shoe; Carbon rubber crepe outsole for durability and traction